Files in this item

Abstract

A pair-approximation model for the spatial dynamics of a height-structured tree population
is defined on a regular lattice where each site can be in one of three states: empty (gap site), 10
occupied by an immature tree, and occupied by a mature tree. The nonlinearities are associated
with resource competition effects of ...»»»»

A pair-approximation model for the spatial dynamics of a height-structured tree population
is defined on a regular lattice where each site can be in one of three states: empty (gap site), 10
occupied by an immature tree, and occupied by a mature tree. The nonlinearities are associated
with resource competition effects of mature trees on immature ones (asymmetric competition)
affecting the mortality of the latter but not their growth. The survival-extinction
transition of the forest is expressed; the early dynamics of colonization are described in terms
of local densities. Predictions of the pair approximation model are compared with results 15
from numerical simulations of cellular automata.^^^^